diff --git a/Gemfile.lock b/Gemfile.lock
index 8df0881..9152088 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -80,7 +80,7 @@ GEM
       faraday (>= 1, < 3)
       sawyer (~> 0.9)
     protocol-hpack (1.5.1)
-    protocol-http (0.37.0)
+    protocol-http (0.39.0)
     protocol-http1 (0.27.0)
       protocol-http (~> 0.22)
     protocol-http2 (0.19.3)